Safe water markers are white and red floating buoys. They have vertical stripes and mark areas that can be passed on either side without difficulties.
Safe water markers are also known as fairway buoys. They can come in many shapes and sizes, although they are usually ball-shaped or cone-shaped. They may have a red, flashing light at the top.
Safe water marks are often used to lay out a route in shallow waters so that boats can safely travel through. If the buoy has a specific waterway associated with it, the name of the waterway or route is pinned to it.